/*!The Graphic Box Library
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * Copyright (C) 2009 - 2017, TBOOX Open Source Group.
 *
 * @author      ruki
 * @file        monotone.h
 * @ingroup     utils
 */
#ifndef GB_UTILS_IMPL_TESSELLATOR_MONOTONE_H
#define GB_UTILS_IMPL_TESSELLATOR_MONOTONE_H

/* //////////////////////////////////////////////////////////////////////////////////////
 * includes
 */
#include "prefix.h"

/* //////////////////////////////////////////////////////////////////////////////////////
 * extern
 */
__tb_extern_c_enter__

/* //////////////////////////////////////////////////////////////////////////////////////
 * interfaces
 */

/* make horizontal monotone region for mesh
 *   
 * monotone:
 *
 *   . . .
 *  .     .
 * . ----- .
 * .      .
 * . -----  .
 * .           .
 * . . . . . . . .
 *
 * not monotone:
 *
 *   . . .
 *  .     .
 * . ----- .
 * .      .    ........
 * . -----  .  . ---- .  <= two segments 
 * .           .      .
 * .                  .
 * . . . . . . . . . ..
 *
 * @param impl      the tessellator impl
 * @param bounds    the polygon bounds
 */
tb_void_t           gb_tessellator_monotone_make(gb_tessellator_impl_t* impl, gb_rect_ref_t bounds);

/* //////////////////////////////////////////////////////////////////////////////////////
 * extern
 */
__tb_extern_c_leave__

#endif


